You must associate a disk group with at least one disk. You can create a new disk group when you select Add or initialize one or more disks from the main menu of the vxdiskadm command to add disks to VxVM control. The disks to be added to a disk group must not belong to an existing disk group.
# vxdiskadd hdisk11
# vxdg init diskgroup [cds=on|off] diskname=devicename
# vxdg init mktdg mktdg01=hdisk12
You can use the cds attribute with the vxdg init command to specify whether a new disk group is compatible with the Cross-platform Data Sharing (CDS) feature. In Veritas Volume Manager 4.0 and later releases, newly created disk groups are compatible with CDS by default (equivalent to specifying cds=on). If you want to change this behavior, edit the file /etc/default/vxdg and set the attribute-value pair cds=off in this file before creating a new disk group.
# vxdg -g diskgroup set cds=on|off